package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.ArithmeticCaptcha;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getCaptcha() {
        //定义宽 高 和 位数
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        // 设置类型，纯数字、纯字母、字母数字混合
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        System.out.println("验证码为:" + code);
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID().toString().replace("-", "");
        String image =specCaptcha.toBase64();

        stringRedisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        CaptchaVo captchaVo = new CaptchaVo(image, key);
        return captchaVo;
    }

    @Override
    public String getLoginInfo(LoginVo loginVo) {
        //1.判断验证码是否为null
        if (!StringUtils.hasLength(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }
        //2.校验验证码的key是否有效
        if (!stringRedisTemplate.hasKey(loginVo.getCaptchaKey())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //3.校验验证码是否正确
        String code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (!code.equals(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //4.根据用户名和密码查询数据库
        LambdaQueryWrapper<SystemUser> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SystemUser::getUsername, loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(queryWrapper);

        if (systemUser == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        if (systemUser.getStatus() == BaseStatus.DISABLE) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //5.校验密码是否正确
        String sha256HexPwd = DigestUtils.sha256Hex(loginVo.getPassword());
        if (!systemUser.getPassword().equals(sha256HexPwd)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //6.返回token
        return JwtUtil.createJwtToken(systemUser.getId());
    }

    @Override
    public SystemUserInfoVo getUserInfo(String token) {
        if (!StringUtils.hasLength(token)) {
            throw new LeaseException(ResultCodeEnum.TOKEN_INVALID);
        }
        Long userId = JwtUtil.getJwtToken(token);
        SystemUser userInfo = systemUserService.getById(userId);
        return new SystemUserInfoVo(userInfo.getName(), userInfo.getAvatarUrl());
    }


}
